The rate of decrease of the side of the cube with a side of 6 cm is 0.25 cm per second.
The rate of decrease of the side of an ice cube can be calculated by considering the volume of the cube. The volume of the cube is decreasing at a rate of 1.5 cm3 per second. Therefore, the rate of decrease of the side of the cube is proportional to the cube's volume.
To calculate the rate of decrease of the side of the cube, we need to use the formula for the volume of a cube, which is: V = s3, where V is the volume and s is the side of the cube.
Since we know that the volume of the cube is decreasing at a rate of 1.5 cm3 per second, we can calculate the rate of decrease of the side of the cube by substituting the value of the rate of decrease of the volume and the current side of the cube (6 cm) into the formula.
Therefore, the rate of decrease of the side of the cube is equal to 1.5 cm3 per second divided by 6 cm3, which is equal to 0.25 cm per second.
In conclusion, the rate of decrease of the side of the cube with a side of 6 cm is 0.25 cm per second.
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Prove that the conditional "All dodecagons must have eleven sides" is false by a counterexample.
All dodecagons must have eleven sides is false and and can be proven through a counter example.
What are dodecagons?
A dodecagons is a polygon which has 12 sides, 12 vertices. In this word do means "Two" and deca means "Ten".
Similar to other polygons, a dodecagon is also a two-dimensional plane figure. A regular dodecagon polygon has 12 equal sides and has 12 equal measures of angles. Irregular dodecagons have unequal sides and angles. Also, a dodecagon can be a convex polygon or concave polygon.
What is a Polygon?
In geometry, a polygon can be defined as a flat or plane, two-dimensional closed shape bounded with straight sides. It does not have curved sides. The sides of a polygon are also called its edges.
So a dodecagon must have twelve sides even though it may be regular or irregular.
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A rhombus has an area of 20 cm^2. One diagonal is 10 cm. What is the other diagonal
The other diagonal of the rhombus is 4 cm.
The other diagonal of the rhombus can be found using the formula for the area of a rhombus, which is A = (d₁ × d₂)/2, where d₁ and d₂ are the lengths of the diagonals.
We're given that the area of the rhombus is 20 cm² and that one diagonal (d1) is 10 cm. Plugging these values into the formula, we get:
20 = (10 × d₂)/2
Simplifying, we get:
20 = 5 d₂
Dividing both sides by 5, we get:
d₂ = 4
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A bakery can make 30 donuts every
15 minutes. What is the unit rate at which the bakery makes donuts? What is the slope of the line?
The unit rate at which the bakery makes donuts is 2 donuts per minute.
The slope of the line would also be 2 since the number of donuts made is directly proportional to the time elapsed. This means that for every minute that passes, 2 donuts are made.
To find the unit rate, we divide the total number of donuts made (30) by the time it takes to make them (15 minutes).
Unit rate = 30 donuts ÷ 15 minutes = 2 donuts per minute
To find the slope of the line, we use the formula:
slope = rise ÷ run
In this case, the "rise" is the number of donuts made and the "run" is the time elapsed. Therefore, the slope is:
slope = 30 donuts ÷ 15 minutes = 2 donuts per minute.
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Triangle LMN has vertices at L(−1, 5), M(−1, 0), N(−2, 5). Determine the vertices of image L′M′N′ if the preimage is rotated 90° clockwise about the origin.
L′(5, 1), M′(0, 1), N′(5, 2)
L′(−1, −5), M′(−1, 0), N′(−2, −5)
L′(−5, −1), M′(0, −1), N′(−5, −2).
L′(1, −5), M′(1, 0), N′(2, −5)
The vertices of image L′M′N′ are L′(−5, −1), M′(0, −1), and N′(−5, −2).
Rotating a figure 90°:Rotating a figure 90° clockwise about the origin means that each point of the figure will be moved to a new position that is located 90° clockwise from its original position, with respect to the origin of the coordinate plane.
To rotate a figure 90° clockwise about the origin follow the steps:
1. Swap the x- and y-coordinates of each point.
2. Negate the new x-coordinates.
3. Leave the new y-coordinates as they are.
Here we have
Triangle LMN has vertices at L(−1, 5), M(−1, 0), N(−2, 5)
Triangle LMN is rotated 90° clockwise about the origin.
Using the above condition
L(−1, 5) => (−(5), −1) => (−5, −1)
M(−1, 0) => (−0, −1) => (0, −1)
N(−2, 5) => (−(5), −2) => (−5, −2)
Therefore,
The vertices of image L′M′N′ are L′(−5, −1), M′(0, −1), and N′(−5, −2).
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Please help, will give brainliest for correct answer.
80 points.
Answer:
Step-by-step explanation: DEFINITIONS vvvvv
Transformations
Refers to the movement of objects in the coordinate plane. There are 4 types: Translation, Reflection, Rotation, and Dilation
Reflection
transformation that flips a figure across a line to form its mirror image on the opposite side of the line
Translation
Transformation that slides a figure.
Rotation
A transformation in which a figure is turned around a point
Dilation
A transformation that changes the size of an object, but not the shape.
Congruence
correspondence of parts.
center of dilation
in a dilation, the fixed point about which the figure is enlarged or reduced
similar
Figures that have the same shape but not necessarily the same size
scale factor
The ratio of any two corresponding lengths in two similar geometric figures.
enlargement
a dilation with a scale factor greater than 1. Image will be greater than the pre-image
reduction
a dilation with a scale factor less than 1. Image will be smaller than the pre-image.
remote interior angles
the angles of a triangle that are not adjacent to a given exterior angle
Exterior Angle Theorem
The measure of an exterior angle of a triangle is equal to the sum of the measures of the two nonadjacent interior angles.
Transversal
a line that intersects two or more lines at different points
SAS Theorem (Side-Angle-Side)
If two sides and the included angle of one triangle are congruent to two sides and the included angle of another triangle, then the triangles are congruent.
Angle-Angle-Side (AAS) Theorem
If two angles and a non-included side of one triangle are congruent to the corresponding parts of another triangle, then the triangles are congruent.
Side-side-side (SSS) Theorem
If the sides of two triangles are in proportion, then the triangles are similar.
Angle-Side-Angle (ASA) Theorem
If two angles and the included side of one triangle are congruent to two angles and the included side of another triangle, then the triangles are congruent.
Angle-Angle-Angle (AAA)
does NOT prove triangles congruent because the sides could be different lengths.
Parallel lines
lines in the same plane that never intersect
Which of the following is NOT a geometric sequence?
a. 20,−40,80,−160,320,...
b. 5,2.5,1.25,0.625,0.3125,...
c. 1,2,4,8,16,...
d. 100,50,10,5,1,...
Answer:
The sequence 100, 50, 10, 5, 1, ... is NOT a geometric sequence because there is no single constant ratio that multiplies each term to get the next one.
What is the percent of decrease from 98. 7 to 0?
0 is a 100% decrease of 98.7. Hope this helped!
Find set of parametric equation and symmetric equation of the line through the point and parallel to the given vector(if possible):
(-3, 0, 2), v = 6j + 3k.
x + 3 / 0 = y / 6 = z - 2 / 3 is the required set of parametric equation and symmetric equation of line.
Given the point (-3, 0, 2) and the vector v = 6j + 3k, we need to find the set of parametric equation and symmetric equation of the line through the point and parallel to the given vector.
Let the line be L and a point on the line be P(x, y, z).
Then, the vector from (-3, 0, 2) to P is given by
r = OP = i(x + 3) + jy + k(z - 2)
Since L is parallel to the vector v = 6j + 3k, the direction ratios of L are proportional to the components of v. Thus, the direction ratios of L are 0, 6, and 3.
Therefore, the parametric equations of L are:
x + 3 = 0 ⇒ x = -3y = tz - 2 = 3t + 2
where t is a parameter, and the symmetric equations are x + 3 / 0 = y / 6 = z - 2 / 3. This is the required answer.
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A boat is heading towards a lighthouse, where Charlotte is watching from a vertical distance of 137 feet above the water. Charlotte measures an angle of depression to the boat at point AA to be 11^{\circ} ∘ . At some later time, Charlotte takes another measurement and finds the angle of depression to the boat (now at point BB) to be 47^{\circ} ∘ . Find the distance from point AA to point BB. Round your answer to the nearest foot if necessary.
The distance from point AA to BB is 577 ft.
What is an angle of depression?An angle of depression is a measure of an angle formed when an observer views an object below the horizontal plane.
In the given question, let the distance from lighthouse to point AA be represented by x. So that;
Tan θ = opposite/ adjacent
Tan 11 = 137/ x
x = 137/ 0.1944
x = 704.733 ft
Let the distance from the lighthouse to point BB be represented by y, so that;
Tan 47 = 137/ y
y = 137/ 1.0724
y = 127.751 ft
Thus,
x - y = 704.733 - 127.751
= 576.982
The distance between point AA and point BB is 577 ft.
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which three of the following theorems verify that triangle WXY=triangle PME?
The theοrem that verifies that WXY=PME is AA, which stands fοr "Angle-Angle" similarity theοrem.
What theοrem verifies that WXY=PME?Accοrding tο the AA similarity theοrem, if twο angles οf οne triangle are cοngruent tο twο angles οf anοther triangle, the triangles are similar.
In this case, we have twο cοrrespοnding angles in triangle WXY and triangle PME that are cοngruent: angle WXY is cοngruent tο angle PME because they are vertical angles, and angle XYW is cοngruent tο angle MEP because they are alternate interiοr angles fοrmed by parallel lines.
Therefοre, by the AA similarity theοrem, we can cοnclude that triangle WXY and triangle PME are similar.
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the likelihood that the decision made based on the sample differs from the decision that would have been made if the entire population had been examined is
The likelihood that the decision made based on the sample differs from the decision that would have been made if the entire population had been examined is called sampling risk.
What is Sampling error?Sampling error refers to the disparity between a sample's characteristics and those of the population from which it was drawn. It arises from using a sample rather than the whole population to estimate statistics such as mean, variance, and proportions.
Since a sample only represents a portion of the population, it cannot be expected to have the same characteristics as the whole population. The study of sampling error is an essential part of statistical analysis, as it is a source of uncertainty in making inferences about the population from a sample.
To reduce the sampling error in your survey, you can utilize a larger sample size. It is also beneficial to ensure that the sample is chosen randomly and without bias.
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profit = total income - total expenditure Calculate this company's a) total income. b) total expenditure. c) profit. Description Sales - Monday Wages - extra staff Stall hire fee Sales - Tuesday Supplies - stationery Sales - Wednesday Materials Online bulk order Money in £25.00 £20.00 £35.00 £100.00 Money out £110.00 £20.00 £6.00 £10.00
The company's total income, expenditure and profit is given respectively as follows:
a.) £180
b.) £146
C.) £34
How to calculate the profit of the company? seeTo calculate the profit of the company the formula such as given below is used.
Profit = total income - total expenditure
The total income = 25+20+35+100 = £180
The total expenditure = 110+20+6+10 = £146
Profit = 180-146 = £34
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jenelle draws one from a standard deck of 52 cards. determine the probability of drawing either a two or a king? write your answer as a reduced fraction. answer
Answer:
2/13
Step-by-step explanation:
A standard deck of cards has four suits
Therefore there are four twos, one from each suit
There are also 4 kings, one from each suit
P(two) = 4 twos/52 cards = 4/ 52 = 1/13
PKing) = 4 kings/52 cards = 1/13
P(two or king) = P(two) + P(king)
= 1/13 + 1/3
= 2/13
the standard deviation represents a , while the standard error of the mean represents a . a. law of large numbers:central limit theorem b. population:sample c. sample:population d. central limit theorem:law of large numbers
The standard error of the mean represents a sample, while the standard deviation represents a population. The correct option is (c) sample; population
The standard error of the mean is a measure of the variability of sample means from multiple samples, while the standard deviation is a measure of the variability of individual data points from the mean of a single sample or population.
The standard error of the mean helps us estimate the accuracy of the sample mean as an estimate of the true population mean, while the standard deviation gives us an idea of how much the data points deviate from the mean. In statistics, it is important to distinguish between these two measures to properly interpret data and draw meaningful conclusions.
Therefore, the correct option is (c) sample; population
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The given question is incomplete, the complete question is:
The standard error of the mean represents a ___, while the standard deviation represents a _______.
a. law of large numbers; central limit theorem
b. population; sample
c. sample; population
d. central limit theorem; law of large numbers
What are the integer solutions to the inequality below?
−
2
<
x
<
2
Answer:
the integer solutions to the inequality -2 < x < 2 are x = -1, 0, and 1.
Step-by-step explanation:
The inequality is written as:
-2 < x < 2
This inequality can be read as "x is greater than -2 and less than 2". In other words, x is between -2 and 2, but not including -2 or 2.
The integer solutions that satisfy this inequality are -1, 0, and 1.
Therefore, the integer solutions to the inequality -2 < x < 2 are x = -1, 0, and 1.
In a population of tomato plants, mean fruit weight is 60 g and (hp) is 0.12. Predict the mean weight of the progeny if tomato plants whose fruit averaged 80 g were selected from the original population and interbred. Express your answer using three significant figures.
Hence, the predicted mean weight of progeny is 77.6 g (rounded off to three significant figures).
As given that the mean fruit weight of a population of tomato plants is 60 g and the heritability coefficient (h_p) is 0.12, it is required to predict the mean weight of the progeny if tomato plants whose fruit averaged 80 g were selected from the original population and interbred .
The formula for the predicted mean weight of progeny (MP) is given as: MP = mean weight of selected individuals + (h_p) × (mean weight of original population - mean weight of selected individuals)
Using the above formula, we have ,mean weight of selected individuals = 80 g mean weight of original population = 60 gh_p = 0.12Substituting the given values in the above formula, we get :[tex]MP = 80 + 0.12 × (60 - 80)MP = 80 + 0.12 × (-20)MP = 80 - 2.4MP = 77.6 g[/tex]
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When released, a yo-yo falls toward the floor. Use conservation of energy to explain why it is able to return to your hand.
When released, a yo-yo falls towards the floor due to conservation of energy.
Conservation of energy:
As it falls, its potential energy is converted into kinetic energy. When the yo-yo reaches its lowest point, it begins to spin rapidly, storing some of this kinetic energy as rotational energy. As the string wraps around the yo-yo's axle, it exerts a force which starts pulling the yo-yo back up towards your hand. This force converts the rotational energy back into potential energy as the yo-yo rises. When the yo-yo reaches your hand, it has regained all its initial potential energy, enabling it to return to your hand.
When the yo-yo reaches the end of the string, the rotational kinetic energy it has stored is used to wind the string back around the axle. This winding motion causes the yo-yo to move back up toward your hand. As the yo-yo moves back up, its potential energy increases, while its rotational kinetic energy decreases. Eventually, the yo-yo reaches your hand and comes to a stop.
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Solve these questions
Answer: 36
Step-by-step explanation: Since the sum of the angles in a triangle is 180 degrees, we can set up an equation:
x + 2x + 2x = 180
Simplifying the equation, we get:
5x = 180
Dividing both sides by 5, we get:
x = 36
Therefore, the value of x is 36 degrees.
Answer:
look at the photo.........................
To fill a pool, Barb uses two hoses. The first hose is rated to fill the pool in
10 hours. The second hose is rated to fill it in 5 hours. If Barb adds a third
hose that uses the slower rate, how long will it take to fill the pool.
It will take [1] hours to fill the pool.
Using division operation, the length it will take the three hoses to fill the pool is 8.33 hours.
What is the division operation?The division operation is one of the four basic mathematical operations, including addition, subtraction, and multiplication.
The division operation involves the dividend, the divisor, and the result called the product.
In this situation, it will take Hose A 10 hours to fill the pool and Hose B 5 hours. If the two hoses are in use, it will 7.5hours (10 + 5)/2.
When the third hose is added, it will take 8.33 hours (10 + 5 + 10)/3.
The first hose's filling rate for the pool = 10 hours
The second hose's filling rate for the pool = 5 hours
The third hose's filling rate for the pool = 10 hours (the slower rate)
The total number of hours used by the three hoses = 25 hours (10 + 5 + 10)
The number of hoses used = 3
The length of time it will take the 3 hoses to fill the pool = 8.33 hours (25/3)
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The third term of a sequence is 14. Term to term rule is square, then subtract 11. Find the first term of the sequence
The third term of a sequence is 14. Term to term rule is square, then subtract 11. The first term of the sequence is 6.
The given information is about the third term of a sequence which is 14, and the term to term rule is square, then subtract 11.
We have to find the first term of the sequence. The sequence can be calculated using the following formula:
An = A1 + (n-1)d
Where, An is the nth term of the sequence A1 is the first term of the sequence d is the common difference between the terms of the sequence. Let's solve the problem by finding the value of the common difference between the terms of the sequence.
Using the given information, we can write: A3 = 14=> A1 + (3 - 1)d = 14=> A1 + 2d = 14 ----- (i)
Also, the term to term rule is square, then subtract 11.So, we can write, A2 = A1 + d = (A1)² - 11 ---- (ii)
Substituting the value of d from equation (ii) in equation (i),
we get: A1 + 2 [(A1)² - 11] = 14 Simplifying this equation, we get: A1² - 2A1 - 12 = 0 On solving this quadratic equation
we get: A1 = -2 or A1 = 6 Ignoring the negative value of A1, we get the first term of the sequence to be 6.
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2. Simplify the expression (5-3i) (-7 - 31) - (6-2i). Show your work
Answer:
Step-by-step explanation:
Let's simplify the expression step by step:
(5-3i)(-7-31) - (6-2i)
= (5)(-7) + (5)(-31i) - (3i)(-7) - (3i)(-31) - 6 + 2i
= -35 - 155i + 21i + 93 - 6 + 2i
= -35 + 87 - 63i + 2i - 155i
= 52 - 216i
Therefore, the simplified expression is 52 - 216i.
How do I solve this?
I would suggest finding k first.
If [tex]k^2-3k+5=0\\[/tex],
[tex]k=\frac{-(-3)\pm\sqrt{(-3)^2-4(1)(5)}}{2(1)}[/tex] by the quadratic formula.
[tex]k=\emptyset[/tex] by the discriminant being negative.
So the expression in terms of k that you need to find cannot be determined.
Using _____, a supplier can use radio frequency identification (RFID) tags on each crate, case, or shipping unit to create a digital shipping list.
Using RFID (radio frequency identification) technology, a supplier can use RFID tags on each crate, case, or shipping unit to create a digital shipping list.
Radio frequency identification (RFID) technology is a wireless communication technology that enables the automatic identification and tracking of objects. RFID tags contain a microchip and an antenna, and are typically attached to or embedded within objects such as crates, cases, or shipping units.
These tags can store information such as a unique identification number or product details, which can be read wirelessly by RFID readers or scanners.
When used in shipping and logistics, suppliers can attach RFID tags to each crate, case, or shipping unit to create a digital shipping list. As the products move through the supply chain, the RFID tags can be read at various checkpoints, providing real-time information on the location and status of the products.
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Solve the equation where θ lies in the interval [0, 2pi). List the answers from least to greatest.
secθ=undefined
The solutions to the equation secθ = undefined from the least to greatest is π/2 and 3π/2.
What is the solution of the equation?The equation secθ = undefined means that the secant of θ is undefined. Recall that the secant function is defined as 1/cosine(θ).
Therefore, secant is undefined when the cosine of θ is equal to zero, since division by zero is undefined.
In the interval [0, 2π), the cosine function equals zero at θ = π/2 and θ = 3π/2.
Therefore, the solutions to the equation secθ = undefined in the interval [0, 2π) are θ = π/2 and θ = 3π/2.
Listing the solutions from least to greatest, we have:
θ = π/2 ≈ 1.571
θ = 3π/2 ≈ 4.712
Note that these values are given in radians.
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alexis puts dimes and quarters aside for the parking meter. she has a total of 20 coins and they are worth $3.80. how many quarters does alexis have?
Alexis has 12 quarters and 8 dimes.
Let's use d to represent the number of dimes and q to represent the number of quarters. We know that Alexis has a total of 20 coins, so d + q = 20.
We also know that the value of these coins is $3.80. Since dimes are worth $0.10 and quarters are worth $0.25, we can write an equation for the total value in cents:
10d + 25q = 380
To make things easier, let's divide both sides of the equation by 5:
2d + 5q = 76
Now we can use the first equation to solve for d in terms of q:
d + q = 20
d = 20 - q
Substituting this into the second equation gives:
2(20 - q) + 5q = 76
Expanding the parentheses and simplifying, we get:
40 - 2q + 5q = 76
3q = 36
q = 12
Therefore, Alexis has 12 quarters. We can check this by plugging q back into the first equation to find that she has 8 dimes as well:
d + q = 20
d + 12 = 20
d = 8
The total value of 12 quarters and 8 dimes is:
12 quarters x $0.25 per quarter + 8 dimes x $0.10 per dime = $3.00 + $0.80 = $3.80
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Carol shares a joke with 3 of her friends. The next day, each of her friends tell the joke to 4 other people. The next day, each people that heard the joke the previous day tells the joke to four different people. The expression 3(4^(x)) models this situation where x represents the number of days after Carol initally told the joke. What do the different parts of the expression represent?
Answer:
Step-by-step explanation:
In this expression, the number 3 represents the initial group of friends to whom Carol told the joke.
The base number 4 represents the number of people each friend told the joke to on the following day.
The exponent x represents the number of days that have passed since Carol first told the joke, and as a result, the number of "generations" of people who have heard the joke.
Therefore, 4 raised to the power of x represents the total number of people who have heard the joke after x days, including Carol's initial group of friends and all subsequent generations of people who have been told the joke by those who heard it before.
Finally, multiplying 3 and 4 raised to the power of x gives the total number of unique people who have heard the joke after x days, since the initial group of friends is not included in the later generations.
Please help and hurry
Answer: 90
Step-by-step explanation: I've done this before
Which equations can be used to solve for y, the length of the room? Select three options.
y(y + 5) = 750
y2 – 5y = 750
750 – y(y – 5) = 0
y(y – 5) + 750 = 0
(y + 25)(y – 30) = 0
I'm thinking of a number between 5. 17 and 203. 71
From the given information provided, the number you are thinking of can be approximately 20.375.
Since the number you are thinking of is between 5 and 203, we can use the following steps to find it:
Take the average of the two endpoints: (5 + 203) / 2 = 104
Check if 104 is greater than or less than 71. Since 104 is greater than 71, we know that the number is between 5 and 104.
Take the average of 5 and 104: (5 + 104) / 2 = 54.5
Check if 54.5 is greater than or less than 17. Since 54.5 is greater than 17, we know that the number is between 17 and 54.5.
Take the average of 17 and 54.5: (17 + 54.5) / 2 = 35.75
Check if 35.75 is greater than or less than 5. Since 35.75 is greater than 5, we know that the number is between 5 and 35.75.
Take the average of 5 and 35.75: (5 + 35.75) / 2 = 20.375
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8x + 4 + 8x - 1 simplify the variable expression
I do not understand this
Pls help!
Answer:
16x + 3
Step-by-step explanation:
Simplify by combining like terms. Add the terms with x, then add the integers.
8x + 8x + 4 - 1 = 16x + 3